Roleset trouble.01 Verbnet Class: 1 "upset slightly":

Roles:

Arg0:cause of trouble


Arg1:experiencer, one upset


Arg2:instrument or manner

Examples:

person: ns tense: past aspect: ns voice: active form: full


just transitive (-)
The volatility inherent in program trading troubled other traders, too.
Arg0:	The volatility inherent in program trading
REL:	troubled
Arg1:	other traders
ArgM-DIS:	too

Only use the instrument arg when the agent is also present.